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J/A+A/549/A8    Atmospheric extinction properties above Mauna Kea (Buton+, 2013)

Atmospheric extinction properties above Mauna Kea from the Nearby Supernova Factory spectro-photometric data set. Buton C., Copin Y., Aldering G., Antilogus P., Aragon C., Bailey S., Baltay C., Bongard S., Canto A., Cellier-Holzem F., Childress M., Chotard N., Fakhouri H.K., Gangler E., Guy J., Hsiao E.Y., Kerschhaggl M., Kowalski M., Loken S., Nugent P., Paech K., Pain R., Pecontal E., Pereira R., Perlmutter S., Rabinowitz D., M.Rigault, Runge K., Scalzo R., Smadja G., Tao C., Thomas R.C., Weaver B.A., Wu C., The Nearby Supernova Factory <Astron. Astrophys. 549, A8 (2013)> =2013A&A...549A...8B
ADC_Keywords: Extinction ; Spectrophotometry Keywords: atmospheric effects - instrumentation: spectrographs - methods: observational - techniques: imaging spectroscopy Abstract: We present a new atmospheric extinction curve for Mauna Kea spanning 3200-9700Å. It is the most comprehensive to date, being based on some 4285 standard star spectra obtained on 478 nights spread over a period of 7 years obtained by the Nearby SuperNova Factory using the SuperNova Integral Field Spectrograph. This mean curve and its dispersion can be used as an aid in calibrating spectroscopic or imaging data from Mauna Kea, and in estimating the calibration uncertainty associated with the use of a mean extinction curve. Our method for decomposing the extinction curve into physical components, and the ability to determine the chromatic portion of the extinction even on cloudy nights, is described and verified over the wide range of conditions sampled by our large dataset. We demonstrate good agreement with atmospheric science data obtain at nearby Mauna Loa Observatory, and with previously published measurements of the extinction above Mauna Kea. Description: SNfactory median atmospheric extinction [mag/airmass] and its decomposition into physical components (Ozone, Aerosol optical depth and Aerosol Angstroem exponent) from 3200Å to 10000Å (2Å bins). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file snfext.dat 69 3551 Atmospheric extinction at Mauna Kea snfext.fits 2880 28 FITS file for atmospheric extinction
See also: J/A+AS/109/293 : Heterochromatic extinction. I. (Grebel+, 1995) J/A+AS/109/313 : Heterochromatic Atmospheric Extinction (Roberts+, 1995) J/other/JAD/18.3 : Infrared extinction spectra of aerosols (Sterken+, 2012) Byte-by-byte Description of file: snfext.dat
Bytes Format Units Label Explanations
2- 13 E12.8 0.1nm lambda Wavelength (Å) 16- 27 E12.8 mag Ext Median atmospheric extinction, in mag/airmass unit 30- 41 E12.8 mag kR Rayleigh scattering, in mag/airmass unit 43- 55 E13.8 mag kO3 Ozone scattering, in mag/airmass unit 58- 69 E12.8 mag ka Aerosols scattering, in mag/airmass unit
Acknowledgements: C. Buton, cbuton(at)me.com
(End) C. Buton [Universitaet Bonn], Patricia Vannier [CDS] 05-Oct-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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